godot/platform/android/java_godot_view_wrapper.cpp

/*************************************************************************/
/*  java_godot_view_wrapper.cpp                                          */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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#include "java_godot_view_wrapper.h"

GodotJavaViewWrapper::GodotJavaViewWrapper(jobject godot_view) {
	JNIEnv *env = get_jni_env();
	ERR_FAIL_NULL(env);

	_godot_view = env->NewGlobalRef(godot_view);

	_cls = (jclass)env->NewGlobalRef(env->GetObjectClass(godot_view));

	int android_device_api_level = android_get_device_api_level();
	if (android_device_api_level >= __ANDROID_API_N__) {
		_set_pointer_icon = env->GetMethodID(_cls, "setPointerIcon", "(I)V");
	}
	if (android_device_api_level >= __ANDROID_API_O__) {
		_request_pointer_capture = env->GetMethodID(_cls, "requestPointerCapture", "()V");
		_release_pointer_capture = env->GetMethodID(_cls, "releasePointerCapture", "()V");
	}
}

bool GodotJavaViewWrapper::can_update_pointer_icon() const {
	return _set_pointer_icon != nullptr;
}

bool GodotJavaViewWrapper::can_capture_pointer() const {
	return _request_pointer_capture != nullptr && _release_pointer_capture != nullptr;
}

void GodotJavaViewWrapper::request_pointer_capture() {
	if (_request_pointer_capture != nullptr) {
		JNIEnv *env = get_jni_env();
		ERR_FAIL_NULL(env);

		env->CallVoidMethod(_godot_view, _request_pointer_capture);
	}
}

void GodotJavaViewWrapper::release_pointer_capture() {
	if (_release_pointer_capture != nullptr) {
		JNIEnv *env = get_jni_env();
		ERR_FAIL_NULL(env);

		env->CallVoidMethod(_godot_view, _release_pointer_capture);
	}
}

void GodotJavaViewWrapper::set_pointer_icon(int pointer_type) {
	if (_set_pointer_icon != nullptr) {
		JNIEnv *env = get_jni_env();
		ERR_FAIL_NULL(env);

		env->CallVoidMethod(_godot_view, _set_pointer_icon, pointer_type);
	}
}

GodotJavaViewWrapper::~GodotJavaViewWrapper() {
	JNIEnv *env = get_jni_env();
	ERR_FAIL_NULL(env);

	env->DeleteGlobalRef(_godot_view);
	env->DeleteGlobalRef(_cls);
}